Our battery refuses to fully charge
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Our battery has stopped charging properly — and we've only done 500 km.
Cue collective gasp from the EV crowd, and a smug "told ya so" from anyone who says we should still stick to dinosaur juice.
Don't panic. Our Tesla's fine. Modern EV battery management systems are quiet little wizards — balancing cells, managing temperature, and reserving a buffer at each end of the pack. Tesla's own research projects their batteries to last over a million km.
No — the misbehaving battery belongs to Marvin, our Mammotion Luba 2 AWD 3000 robot mower. After nearly 500 km of lawn, 665 hours and 215 charge cycles, he's started docking, beginning to charge, then quitting somewhere between 38% and 45%.
Mammotion’s in-app live chat sent me on a small adventure. Charging contacts? Clean and level. Indicator lights? Solid green. Voltage at the base station? 33.5 V. Firmware update? Did it — the changelog even mentions "optimised low-temperature charging efficiency". Still no full charge.
This morning's verdict from Mammotion: faulty power adapter on the charging station. I have forwarded the issue onto our retailer, Robotech Australia, for hopefully a quick resolution.
Within an hour and a half, Vinni at Robotech replied — opening a warranty claim and shipping us a new power supply and charging station. Top service.
So, Marvin is on short shifts for a week or two. Fran says Marvin is just on strike for higher pay.
Related Posts
- Resolved — how Marvin got his charge back: Marvin's charging strike is over 11 Jun 2026
- Earlier — Marvin's arrival: We bought a Mammotion robot mower 27 Jul 2024
- First impressions of Marvin the mower 3 Aug 2024
Links
- Real-world EV battery longevity: EV battery health — 22,700-vehicle study (Geotab)
- Mammotion Australia
- Where we bought Marvin: Robotech Australia
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